Batch processing is the collection of a group of similar transactions over a period of time, and their processing at a single time as a batch.
This type of processing has been associated with mainframe centralised type systems. The method has been reduced in importance with the development of more advanced types of processing. It still remains an important form of processing as many systems used now, are based on batch processed systems.
Advantages

• Relatively easy to develop
• Less processing power is required as deals with similar updates
• Checks in place as part of the systems run
• Less hardware required, therefore cheaper.
  Disadvantages
• Often delays between when a transaction is made and when the master file is updated and the output generated
• Management information is often incomplete due to out of date data
• Often master files kept off line therefore access may not always be available.